[REF] mail, *: refactor messaging with OWL

This commit is a significant rewriting of client-side discuss, chatter,
chat window, and messaging menu using OWL. The behavior should be broadly
the same, with some slight functional changes here and there.

From a technical standpoint, the code of messaging is mainly organized in 2
main groups of modules:

- models, which are logical entities that depict the client-side state of
  messaging as a whole.
- components, which are in charge of displaying information from models.

This refactoring also introduces new JS guidelines regarding folder structure
(/static) and naming rules for JS modules.

Community PR: https://github.com/odoo/odoo/pull/39023
Enterprise PR: https://github.com/odoo/enterprise/pull/6249

Task-1914207

This PR is a collaborative work by Alexandre, Julien, Sébastien and Xavier,
with the precious help of Lucas to speed it up towards the end.

closes odoo/odoo#39023

Related: odoo/enterprise#6249
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
Co-authored-by: Alexandre Kühn <aku@odoo.com>
Co-authored-by: Julien Giannone <jgi@odoo.com>
Co-authored-by: Lucas Perais <lpe@odoo.com>
Co-authored-by: Sébastien Theys <seb@odoo.com>
Co-authored-by: Xavier Dubuc <xdu@odoo.com>

3 files changed, 300 insertions, 0 deletions

diff --git a/addons/mail/static/src/components/thread_preview/thread_preview.js b/addons/mail/static/src/components/thread_preview/thread_preview.js
new file mode 100644
index 00000000000..f2bbfabe3f9
--- /dev/null
+++ b/addons/mail/static/src/components/thread_preview/thread_preview.js
@@ -0,0 +1,124 @@
+odoo.define('mail/static/src/components/thread_preview/thread_preview.js', function (require) {
+'use strict';
+
+const components = {
+    MessageAuthorPrefix: require('mail/static/src/components/message_author_prefix/message_author_prefix.js'),
+    PartnerImStatusIcon: require('mail/static/src/components/partner_im_status_icon/partner_im_status_icon.js'),
+};
+const useStore = require('mail/static/src/component_hooks/use_store/use_store.js');
+const mailUtils = require('mail.utils');
+
+const { Component } = owl;
+const { useRef } = owl.hooks;
+
+class ThreadPreview extends Component {
+
+    /**
+     * @override
+     */
+    constructor(...args) {
+        super(...args);
+        useStore(props => {
+            const thread = this.env.models['mail.thread'].get(props.threadLocalId);
+            const mainThreadCache = thread ? thread.mainCache : undefined;
+            let lastMessageAuthor;
+            let lastMessage;
+            if (thread) {
+                const orderedMessages = mainThreadCache.orderedMessages;
+                lastMessage = orderedMessages[orderedMessages.length - 1];
+            }
+            if (lastMessage) {
+                lastMessageAuthor = lastMessage.author;
+            }
+            return {
+                isDeviceMobile: this.env.messaging.device.isMobile,
+                lastMessage: lastMessage ? lastMessage.__state : undefined,
+                lastMessageAuthor: lastMessageAuthor
+                    ? lastMessageAuthor.__state
+                    : undefined,
+                thread: thread ? thread.__state : undefined,
+                threadCorrespondent: thread && thread.correspondent
+                    ? thread.correspondent.__state
+                    : undefined,
+            };
+        });
+        /**
+         * Reference of the "mark as read" button. Useful to disable the
+         * top-level click handler when clicking on this specific button.
+         */
+        this._markAsReadRef = useRef('markAsRead');
+    }
+
+    //--------------------------------------------------------------------------
+    // Public
+    //--------------------------------------------------------------------------
+
+    /**
+     * Get the image route of the thread.
+     *
+     * @returns {string}
+     */
+    image() {
+        if (this.thread.correspondent) {
+            return `/web/image/res.partner/${this.thread.correspondent.id}/image_128`;
+        }
+        return `/web/image/mail.channel/${this.thread.id}/image_128`;
+    }
+
+    /**
+     * Get inline content of the last message of this conversation.
+     *
+     * @returns {string}
+     */
+    get inlineLastMessageBody() {
+        if (!this.thread.lastMessage) {
+            return '';
+        }
+        return mailUtils.htmlToTextContentInline(this.thread.lastMessage.prettyBody);
+    }
+
+    /**
+     * @returns {mail.thread}
+     */
+    get thread() {
+        return this.env.models['mail.thread'].get(this.props.threadLocalId);
+    }
+
+    //--------------------------------------------------------------------------
+    // Handlers
+    //--------------------------------------------------------------------------
+
+    /**
+     * @private
+     * @param {MouseEvent} ev
+     */
+    _onClick(ev) {
+        const markAsRead = this._markAsReadRef.el;
+        if (markAsRead && markAsRead.contains(ev.target)) {
+            // handled in `_onClickMarkAsRead`
+            return;
+        }
+        this.trigger('o-select-thread', { thread: this.thread });
+    }
+
+    /**
+     * @private
+     * @param {MouseEvent} ev
+     */
+    _onClickMarkAsRead(ev) {
+        this.thread.markAsSeen();
+    }
+
+}
+
+Object.assign(ThreadPreview, {
+    components,
+    props: {
+        threadLocalId: String,
+    },
+    template: 'mail.ThreadPreview',
+});
+
+return ThreadPreview;
+
+});
diff --git a/addons/mail/static/src/components/thread_preview/thread_preview.scss b/addons/mail/static/src/components/thread_preview/thread_preview.scss
new file mode 100644
index 00000000000..7e7f8abdf1a
--- /dev/null
+++ b/addons/mail/static/src/components/thread_preview/thread_preview.scss
@@ -0,0 +1,113 @@
+// ------------------------------------------------------------------
+// Layout
+// ------------------------------------------------------------------
+
+.o_ThreadPreview {
+    @include o-mail-notification-list-item-layout();
+
+    &:hover .o_ThreadPreview_markAsRead {
+        opacity: 1;
+    }
+}
+
+.o_ThreadPreview_content {
+    @include o-mail-notification-list-item-content-layout();
+}
+
+.o_ThreadPreview_core {
+    @include o-mail-notification-list-item-core-layout();
+}
+
+.o_ThreadPreview_coreItem {
+    @include o-mail-notification-list-item-core-item-layout();
+}
+
+.o_ThreadPreview_counter {
+    @include o-mail-notification-list-item-counter-layout();
+}
+
+.o_ThreadPreview_date {
+    @include o-mail-notification-list-item-date-layout();
+}
+
+.o_ThreadPreview_header {
+    @include o-mail-notification-list-item-header-layout();
+}
+
+.o_ThreadPreview_image {
+    @include o-mail-notification-list-item-image-layout();
+}
+
+.o_ThreadPreview_imageContainer {
+    @include o-mail-notification-list-item-image-container-layout();
+}
+
+.o_ThreadPreview_inlineText {
+    @include o-mail-notification-list-item-inline-text-layout();
+}
+
+.o_ThreadPreview_markAsRead {
+    @include o-mail-notification-list-item-mark-as-read-layout();
+}
+
+.o_ThreadPreview_name {
+    @include o-mail-notification-list-item-name-layout();
+}
+
+.o_ThreadPreview_partnerImStatusIcon {
+    @include o-mail-notification-list-item-partner-im-status-icon-layout();
+}
+
+.o_ThreadPreview_sidebar {
+    @include o-mail-notification-list-item-sidebar-layout();
+}
+
+// ------------------------------------------------------------------
+// Style
+// ------------------------------------------------------------------
+
+.o_ThreadPreview {
+    @include o-mail-notification-list-item-style();
+
+    &:hover {
+        .o_ThreadPreview_partnerImStatusIcon {
+            @include o-mail-notification-list-item-hover-partner-im-status-icon-style();
+        }
+    }
+
+    &.o-muted {
+        &:hover {
+            .o_ThreadPreview_partnerImStatusIcon {
+                @include o-mail-notification-list-item-muted-hover-partner-im-status-icon-style();
+            }
+        }
+    }
+}
+
+.o_ThreadPreview_core {
+    @include o-mail-notification-list-item-core-style();
+}
+
+.o_ThreadPreview_counter {
+    @include o-mail-notification-list-item-bold-style();
+}
+
+.o_ThreadPreview_date {
+    @include o-mail-notification-list-item-date-style();
+
+    &.o-muted {
+        color: gray('500');
+    }
+}
+
+.o_ThreadPreview_markAsRead {
+    @include o-mail-notification-list-item-mark-as-read-style();
+}
+
+.o_ThreadPreview_name {
+    @include o-mail-notification-list-item-bold-style();
+}
+
+.o_ThreadPreview_partnerImStatusIcon {
+    @include o-mail-notification-list-item-partner-im-status-icon-style();
+}
diff --git a/addons/mail/static/src/components/thread_preview/thread_preview.xml b/addons/mail/static/src/components/thread_preview/thread_preview.xml
new file mode 100644
index 00000000000..ded9c6fadac
--- /dev/null
+++ b/addons/mail/static/src/components/thread_preview/thread_preview.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates xml:space="preserve">
+
+    <t t-name="mail.ThreadPreview" owl="1">
+        <!--
+            The preview template is used by the discuss in mobile, and by the systray
+            menu in order to show preview of threads.
+        -->
+        <div class="o_ThreadPreview" t-att-class="{ 'o-muted': thread and thread.message_unread_counter === 0 }" t-on-click="_onClick" t-att-data-thread-local-id="thread ? thread.localId : undefined">
+            <t t-if="thread">
+                <div class="o_ThreadPreview_sidebar">
+                    <div class="o_ThreadPreview_imageContainer o_ThreadPreview_sidebarItem">
+                        <img class="o_ThreadPreview_image rounded-circle" t-att-src="image()" alt="Thread Image"/>
+                        <t t-if="thread.correspondent and thread.correspondent.im_status">
+                            <PartnerImStatusIcon
+                                class="o_ThreadPreview_partnerImStatusIcon"
+                                t-att-class="{
+                                    'o-mobile': env.messaging.device.isMobile,
+                                    'o-muted': thread.message_unread_counter === 0,
+                                }"
+                                partnerLocalId="thread.correspondent.localId"
+                            />
+                        </t>
+                    </div>
+                </div>
+                <div class="o_ThreadPreview_content">
+                    <div class="o_ThreadPreview_header">
+                        <span class="o_ThreadPreview_name" t-att-class="{ 'o-mobile': env.messaging.device.isMobile, 'o-muted': thread.message_unread_counter === 0 }">
+                            <t t-esc="thread.displayName"/>
+                        </span>
+                        <t t-if="thread.message_unread_counter > 0">
+                            <span class="o_ThreadPreview_counter" t-att-class="{ 'o-muted': thread.message_unread_counter === 0 }">
+                                (<t t-esc="thread.message_unread_counter"/>)
+                            </span>
+                        </t>
+                        <span class="o-autogrow"/>
+                        <t t-if="thread.lastMessage">
+                            <span class="o_ThreadPreview_date" t-att-class="{ 'o-muted': thread.message_unread_counter === 0 }">
+                                <t t-esc="thread.lastMessage.date.fromNow()"/>
+                            </span>
+                        </t>
+                    </div>
+                    <div class="o_ThreadPreview_core">
+                        <span class="o_ThreadPreview_coreItem o_ThreadPreview_inlineText" t-att-class="{ 'o-empty': inlineLastMessageBody.length === 0 }">
+                            <t t-if="thread.lastMessage and thread.lastMessage.author">
+                                <MessageAuthorPrefix
+                                    messageLocalId="thread.lastMessage.localId"
+                                    threadLocalId="thread.localId"
+                                />
+                            </t>
+                            <t t-raw="inlineLastMessageBody"/>
+                        </span>
+                        <span class="o-autogrow"/>
+                        <t t-if="thread.message_unread_counter > 0">
+                            <span class="o_ThreadPreview_coreItem o_ThreadPreview_markAsRead fa fa-check" title="Mark as Read" t-on-click="_onClickMarkAsRead"/>
+                        </t>
+                    </div>
+                </div>
+            </t>
+        </div>
+    </t>
+
+</templates>